sáng tạo với cảm biến MAX30102

#include <Wire.h>

#include "MAX30105.h"

#include "heartRate.h"

MAX30105 particleSensor;

const byte RATE_SIZE = 4;

byte rates[RATE_SIZE];

byte rateSpot = 0;

long lastBeat = 0;

float beatsPerMinute;

int beatAvg;

void setup()

{

Serial.begin(115200);

Serial.println("Initializing...");

if (!particleSensor.begin(Wire, I2C_SPEED_FAST))

{

Serial.println("MAX30105 was not found. Please check wiring/power. ");

while (1)

;

}

Serial.println("Place your index finger on the sensor with steady pressure.");

particleSensor.setup();

particleSensor.setPulseAmplitudeRed(0x0A);

particleSensor.setPulseAmplitudeGreen(0);

void loop()

{

long irValue = particleSensor.getIR();

if (checkForBeat(irValue) == true)

{

//We sensed a beat!

long delta = millis() - lastBeat;

lastBeat = millis();

beatsPerMinute = 60 / (delta / 1000.0);

if (beatsPerMinute < 255 && beatsPerMinute > 20)

{

rates[rateSpot++] = (byte)beatsPerMinute;

rateSpot %= RATE_SIZE;

beatAvg = 0;

for (byte x = 0; x < RATE_SIZE; x++)

beatAvg += rates[x];

beatAvg /= RATE_SIZE;

}

}

Serial.print("IR=");

Serial.print(irValue);

Serial.print(", BPM=");

Serial.print(beatsPerMinute);

Serial.print(", Avg BPM=");

Serial.print(beatAvg);

if (irValue < 50000)

Serial.print(" No finger?");

Serial.println();

}

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